If you want to develop and test your code without having to append a special port onto your host name – that is, you don’t have another web server acting as a proxy to JBoss – then open up the \jboss\server\default\deploy\jbossweb-tomcat50.sar\server.xml file. Right near the top of the file, you’ll see the port designation set to 8080. Just change that to 80 and restart JBoss.